Lecture Description
Example problem showing how to find the rate constant k from the half-life of a first order reaction.
Watch the next lesson: www.khanacademy.org/science/chemistry/chem-kinetics/copy-of-kinetics/v/second-order-reaction-with-calculus?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry
Missed the previous lesson? www.khanacademy.org/science/chemistry/chem-kinetics/copy-of-kinetics/v/first-order-reaction-example?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry
Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful.
Course Index
- Introduction to chemistry
- Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan Academy
- Introduction to the atom | Chemistry of life | Biology | Khan Academy
- Orbitals | Electronic structure of atoms | Chemistry | Khan Academy
- More on orbitals and electron configuration | Chemistry | Khan Academy
- Electron Configurations
- Electron configurations 2 | Electronic structure of atoms | Chemistry | Khan Academy
- Noble gas configuration (old, low volume)
- Noble gas configuration | Electronic structure of atoms | Chemistry | Khan Academy
- Valence Electrons
- Groups of the Periodic Table
- Periodic Table Trends: Ionization Energy
- Other Periodic Table Trends
- Ionic, covalent, and metallic bonds | Chemical bonds | Chemistry | Khan Academy
- Molecular and Empirical Formulas
- The mole and Avogadro's number | Atoms, compounds, and ions | Chemistry | Khan Academy
- Formula from Mass Composition
- Another mass composition problem | Chemistry | Khan Academy
- Balancing Chemical Equations
- Stoichiometry | Chemical reactions and stoichiometry | Chemistry | Khan Academy
- Stoichiometry: Limiting reagent | Chemical reactions and stoichiometry | Chemistry | Khan Academy
- Ideal gas equation: PV = nRT | Chemistry | Khan Academy
- Ideal gas equation example 1 | Chemistry | Khan Academy
- Ideal gas equation example 2 | Chemistry | Khan Academy
- Ideal gas equation example 3 | Chemistry | Khan Academy
- Ideal gas equation example 4 | Chemistry | Khan Academy
- Introduction to partial pressure | Gases and kinetic molecular theory | Chemistry | Khan Academy
- Partial pressure example | Chemistry | Khan Academy
- States of matter | States of matter and intermolecular forces | Chemistry | Khan Academy
- States of matter follow-up | States of matter and intermolecular forces | Chemistry | Khan Academy
- Specific heat, heat of fusion and vaporization example | Chemistry | Khan Academy
- Chilling water problem | States of matter and intermolecular forces | Chemistry | Khan Academy
- Phase diagrams | States of matter and intermolecular forces | Chemistry | Khan Academy
- Van der Waals forces | States of matter and intermolecular forces | Chemistry | Khan Academy
- Covalent networks, metallic crystals, and ionic crystals | Chemistry | Khan Academy
- Vapor pressure | States of matter and intermolecular forces | Chemistry | Khan Academy
- Suspensions, colloids and solutions | Chemistry | Khan Academy
- Solubility and intermolecular forces | Chemistry | Khan Academy
- Boiling point elevation and freezing point depression | Chemistry | Khan Academy
- Introduction to kinetics | Energy and enzymes | Biology | Khan Academy
- Reactions in equilibrium | Chemical equilibrium | Chemistry | Khan Academy
- Group trend for ionization energy | Periodic table | Chemistry | Khan Academy
- Keq intuition | Chemical equilibrium | Chemistry | Khan Academy
- Keq derivation intuition | Chemical equilibrium | Chemistry | Khan Academy
- Heterogeneous equilibrium | Chemical equilibrium | Chemistry | Khan Academy
- Le Chatelier's principle | Chemical equilibrium | Chemistry | Khan Academy
- Introduction to pH, pOH, and pKw
- Acid Base Introduction
- pH, pOH of strong acids and bases | Chemistry | Khan Academy
- pH of a Weak Acid
- pH of a Weak Base
- Conjugate acids and bases
- pKa and pKb relationship | Acids and bases | Chemistry | Khan Academy
- Buffers and Henderson-Hasselbalch | Chemistry | Khan Academy
- Strong Acid Titration
- Buffer capacity | Buffers, titrations, and solubility equilibria | Chemistry | Khan Academy
- Weak Acid Titration
- Private video
- Titration roundup | Buffers, titrations, and solubility equilibria | Chemistry | Khan Academy
- Introduction to Oxidation States
- More on Oxidation States
- Hydrogen Peroxide Correction
- Redox Reactions
- Galvanic Cells
- Types of decay | Nuclear chemistry | Chemistry | Khan Academy
- Half-life and carbon dating | Nuclear chemistry | Chemistry | Khan Academy
- Exponential decay formula proof (can skip, involves calculus) | Chemistry | Khan Academy
- Introduction to exponential decay | Nuclear chemistry | Chemistry | Khan Academy
- More exponential decay examples | Nuclear chemistry | Chemistry | Khan Academy
- Macrostates and microstates | Thermodynamics | Physics | Khan Academy
- Quasistatic and reversible processes | Thermodynamics | Physics | Khan Academy
- First law of thermodynamics / internal energy | Thermodynamics | Physics | Khan Academy
- More on internal energy | Thermodynamics | Physics | Khan Academy
- Work from expansion | Thermodynamics | Physics | Khan Academy
- PV-diagrams and expansion work | Thermodynamics | Physics | Khan Academy
- Proof: U = (3/2)PV or U = (3/2)nRT | Thermodynamics | Physics | Khan Academy
- Work done by isothermic process | Thermodynamics | Physics | Khan Academy
- Carnot cycle and Carnot engine | Thermodynamics | Physics | Khan Academy
- Proof: Volume ratios in a carnot cycle | Thermodynamics | Physics | Khan Academy
- Proof: S (or entropy) is a valid state variable | Thermodynamics | Physics | Khan Academy
- Thermodynamic entropy definition clarification | Physics | Khan Academy
- Reconciling thermodynamic and state definitions of entropy | Physics | Khan Academy
- Entropy intuition | Thermodynamics | Physics | Khan Academy
- Maxwell's demon | Thermodynamics | Physics | Khan Academy
- More on entropy | Thermodynamics | Physics | Khan Academy
- Efficiency of a Carnot engine | Thermodynamics | Physics | Khan Academy
- Carnot efficiency 2: Reversing the cycle | Thermodynamics | Physics | Khan Academy
- Carnot efficiency 3: Proving that it is the most efficient | Physics | Khan Academy
- Enthalpy | Thermodynamics | Chemistry | Khan Academy
- Heat of formation | Thermodynamics | Chemistry | Khan Academy
- Hess's law and reaction enthalpy change | Chemistry | Khan Academy
- Gibbs free energy and spontaneity | Chemistry | Khan Academy
- Gibbs free energy example | Thermodynamics | Chemistry | Khan Academy
- More rigorous Gibbs free energy / spontaneity relationship | Chemistry | Khan Academy
- A look at a seductive but wrong Gibbs/spontaneity proof | Chemistry | Khan Academy
- Stoichiometry example problem 1 | Chemistry | Khan Academy
- Stoichiometry example problem 2 | Chemistry | Khan Academy
- Limiting reactant example problem 1 | Chemistry | Khan Academy
- Empirical and Molecular Formulas from Stoichiometry
- Example of Finding Reactant Empirical Formula
- Stoichiometry of a Reaction in Solution
- Another Stoichiometry Example in a Solution
- Molecular and Empirical Forumlas from Percent Composition
- Acid base titration example | Chemistry | Khan Academy
- Spectrophotometry introduction | Kinetics | Chemistry | Khan Academy
- Spectrophotometry example | Kinetics | Chemistry | Khan Academy
- Hess's law example | Thermodynamics | Chemistry | Khan Academy
- Vapor pressure example | Chemistry | Khan Academy
- Change of state example | States of matter and intermolecular forces | Chemistry | Khan Academy
- Small x approximation for small Kc | Chemistry | Khan Academy
- Small x approximation for large Kc | Chemical equilibrium | Chemistry | Khan Academy
- pH and pKa relationship for buffers | Chemistry | Khan Academy
- 2015 AP chemistry free response 5a
- AP Chemistry multiple choice sample: Boiling points
- Rate constant k from half-life example | Knetics | Chemistry | Khan Academy
- Ways to get a buffer solution | Chemistry | Khan Academy
- Comparing Q vs K example | Chemical equilibrium | Chemistry | Khan Academy
- Finding units of rate constant k | Knetics | Chemistry | Khan Academy
- Calculating internal energy and work example | Chemistry | Khan Academy
- Ionic bonds and Coulombs law
- Bond enthalpy and enthalpy of reaction | Chemistry | Khan Academy
- Introduction to reaction quotient Qc | Chemical equilibrium | Chemistry | Khan Academy
- Le Chatelier's principle: Worked example | Chemical equilibrium | Chemistry | Khan Academy
- Conjugate acid-base pairs | Acids and bases | Chemistry | Khan Academy
Course Description
An introductory college-level chemistry course that explores topics such as atoms, compounds, and ions; chemical reactions and stoichiometry; ideal gases; chemical equilibrium; acids and bases; kinetics; thermodynamics; redox reactions and electrochemistry; and a whole lot more!